html, body, #root {
  height: 100%;
  font-size: 16px;
  --wave-one-color: rgba(255, 255, 255, 0.7);
  --wave-two-color: rgba(255, 255, 255, 0.5);
  --wave-three-color: rgba(255, 255, 255, 0.3);
  --wave-four-color: rgba(255, 255, 255, 1);
}
/*清浮动*/
.clearfix:after {
  content: ".";
  display: block;
  height: 0;
  clear: both;
  visibility: hidden;
} 
.clearfix {
  display:block;
}